Mount Pleasant weather in September

In September, Mount Pleasant sees average daytime highs of 72°F and overnight lows near 52°F, with 2.8 in of rain across 9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 76°F in the first days to 67°F by the end. The sky is clear or mostly clear about 34% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Mount Pleasant's 2nd-clearest and 9th-windiest month. For the whole year in context, see Mount Pleasant's year-round climate.

Daytime high
72°
4th warmest
Overnight low
52°
9th coldest
Rainfall
2.8 in
9 wet days
Daylight
12 h 18 min
6:25 AM – 6:42 PM
Cloud cover
55%
2nd clearest
Wind
7 mph
9th windiest
Solar energy
4.19 kWh/m²
Travel score
6.8
out of 10

Mount Pleasant is city in Isabella County, Michigan, United States.

Density
1,285/km²
people per km²
Founded
1889

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 76°F in the first days to 67°F by the end.

A typical September day in Mount Pleasant reaches about 72°F in the afternoon and slips back to 52°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 61°F and 82°F. Set against its neighbours, September runs about 7°F cooler than August and about 13°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17757
27756
37656
47656
57655
67555
77555
87554
97454
107454
117453
127353
137353
147352
157252
167251
177151
187151
197150
207050
217050
226949
236949
246948
256848
266848
276747
286747
296647
306646

How September really feels in Mount Pleasant

Once humidity and wind are folded in, September averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Mount Pleasant weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan29° / 16°2.197.19.10.0
Feb33° / 17°1.86.96.110.20.0
Mar43° / 25°2.28.94.111.60.8
Apr56° / 37°3.6111.913.23.7
May67° / 47°3.610.7014.56.1
Jun77° / 57°3.410.5015.26.6
Jul81° / 61°3.010.1014.96.5
Aug79° / 59°3.010.2013.86.7
Sep72° / 52°2.89012.36.8
Oct59° / 41°2.99.90.310.84.4
Nov45° / 31°2.492.29.51.1
Dec34° / 23°2.18.868.80.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35545
45545
55545
65545
75446
85446
95446
105347
115347
125248
135248
145149
155149
165050
175050
185050
195050
204951
214951
224951
234852
244852
254852
264753
274654
284654
294654
304654

Chance of precipitation in September

Any precipitation

Mount Pleasant gets around 2.8 in of rain over 9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
230
330
429
529
629
729
829
929
1029
1129
1229
1329
1429
1529
1628
1728
1829
1929
2029
2130
2230
2331
2432
2532
2633
2733
2834
2934
3034

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1412617142
2432616142
3452615132
4472514122
5482514112
6502514101
7522413101
853241391
955231381
1055231381
1156231371
1257231271
1359221261
1460221260
1562221150
1663211150
1763211150
1865201050
1967191040
206918940
217018840
227217740
237316740
247615630
257715530
267814530
278013430
288013430
298212420
308311420

Wind in September

Winds average 7 mph in September.

Across September, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over September. Sunrise moves from 6:07 AM to 6:41 AM, and sunset from 7:10 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:077:10
213.06:087:08
313.06:107:07
412.96:117:05
512.96:127:03
612.86:137:01
712.86:146:59
812.76:156:57
912.76:166:55
1012.66:186:54
1112.56:196:52
1212.56:206:50
1312.46:216:48
1412.46:226:46
1512.36:236:44
1612.36:256:42
1712.26:266:40
1812.26:276:38
1912.16:286:37
2012.16:296:35
2112.06:306:33
2212.06:326:31
2311.96:336:29
2411.96:346:27
2511.86:356:25
2611.86:366:23
2711.76:376:21
2811.76:396:19
2911.66:406:18
3011.66:416:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.19 kWh/m².

For context, solar energy here swings from a low near 1.34 kWh/m² to a high of 6.27 kWh/m² in June across the year — September's 4.19 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.7Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.4Bright
114.4Bright
124.3Bright
134.3Bright
144.2Bright
154.2Bright
164.1Bright
174.1Bright
184.0Bright
194.0Bright
204.0Moderate
213.9Moderate
223.9Moderate
233.8Moderate
243.8Moderate
253.7Moderate
263.7Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Is September a good time to visit Mount Pleasant?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.8
Sightseeing
1st-best month of the year
4.7
Beach & pool
4th-best month of the year

September is a reasonable time to visit Mount Pleasant for sightseeing.

What to pack for Mount Pleasant in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Mount Pleasant sees daytime highs around 72°F and nights near 52°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Mount Pleasant in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mount Pleasant peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 19UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5High
May7Very high
Jun9Very high
Jul8Very high
Aug7High
Sep6High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Mount Pleasant?

Mount Pleasant sits at 43.6°N, 84.8°W, 771 ft above sea level, in United States. The nearest listed city is Midland, 26 mi away.

Topography around Mount Pleasant

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Mount Pleasant.

Within 2 miles, the terrain around Mount Pleasant has only modest variations in elevation — a maximum elevation change of 148 ft around an average of 778 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 397 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,178 ft.

The land around Mount Pleasant is covered by artificial surfaces (32%), trees (31%) and grassland (24%) within 2 miles, cropland (49%) and trees (35%) within 10 miles, and trees (53%) and cropland (34%) within 50 miles.

2 miles
148 ft
10 miles
397 ft
50 miles
1,178 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Midland 26 mi · Saginaw Township North 39 mi · Saginaw 43 mi · Bay City 44 mi · Forest Hills 57 mi · Waverly 60 mi · Lansing 61 mi · East Lansing 61 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mount Pleasant (43.5978°, -84.7675°, elevation 771 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).